Abstract: This paper discribes the generation methods of PWM technology in AC drive systems,and the characteristics and the problems of those methods in application are analysed.Finally,the developing trend of PWM technology is proposed.

• 文摘:综述了交流传动系统PWM技术的产生方法，分析了各种方法的特点及在实际应用中存在的问题，并对今后的发展趋势作了展望。